{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["RNA", "cell line", "cell type", "DNA", "protein"], "input": "In contrast, addition of either ligand or antagonist in combination with a heat activation step promoted DNA binding by approximately 3-fold over that of heat-activated unliganded receptors ."}
{"RNA": [], "cell line": [], "cell type": [], "DNA": [], "protein": ["unliganded receptors"]}